@jitl/quickjs-wasmfile-debug-sync/dist/emscripten-module.browser.mjs

Variant of quickjs library: Variant with separate .WASM file. Supports browser ESM, NodeJS ESM, and NodeJS CommonJS.

var QuickJSRaw = (() => {
  var _scriptName = import.meta.url;
  
  return (
function(moduleArg = {}) {
  var moduleRtn;

// include: shell.js
// The Module object: Our interface to the outside world. We import
// and export values on it. There are various ways Module can be used:
// 1. Not defined. We create it here
// 2. A function parameter, function(moduleArg) => Promise<Module>
// 3. pre-run appended it, var Module = {}; ..generated code..
// 4. External script tag defines var Module.
// We need to check if Module already exists (e.g. case 3 above).
// Substitution will be replaced with actual code on later stage of the build,
// this way Closure Compiler will not mangle it (e.g. case 4. above).
// Note that if you want to run closure, and also to use Module
// after the generated code, you will need to define   var Module = {};
// before the code. Then that object will be used in the code, and you
// can continue to use Module afterwards as well.
var Module = moduleArg;

// Set up the promise that indicates the Module is initialized
var readyPromiseResolve, readyPromiseReject;
var readyPromise = new Promise((resolve, reject) => {
  readyPromiseResolve = resolve;
  readyPromiseReject = reject;
});
["_QTS_Throw","_QTS_NewError","_QTS_RuntimeSetMemoryLimit","_QTS_RuntimeComputeMemoryUsage","_QTS_RuntimeDumpMemoryUsage","_QTS_RecoverableLeakCheck","_QTS_BuildIsSanitizeLeak","_QTS_RuntimeSetMaxStackSize","_QTS_GetUndefined","_QTS_GetNull","_QTS_GetFalse","_QTS_GetTrue","_QTS_NewRuntime","_QTS_FreeRuntime","_QTS_NewContext","_QTS_FreeContext","_QTS_FreeValuePointer","_QTS_FreeValuePointerRuntime","_QTS_FreeVoidPointer","_QTS_FreeCString","_QTS_DupValuePointer","_QTS_NewObject","_QTS_NewObjectProto","_QTS_NewArray","_QTS_NewArrayBuffer","_QTS_NewFloat64","_QTS_GetFloat64","_QTS_NewString","_QTS_GetString","_QTS_GetArrayBuffer","_QTS_GetArrayBufferLength","_QTS_NewSymbol","_QTS_GetSymbolDescriptionOrKey","_QTS_IsGlobalSymbol","_QTS_IsJobPending","_QTS_ExecutePendingJob","_QTS_GetProp","_QTS_GetPropNumber","_QTS_SetProp","_QTS_DefineProp","_QTS_GetOwnPropertyNames","_QTS_Call","_QTS_ResolveException","_QTS_Dump","_QTS_Eval","_QTS_GetModuleNamespace","_QTS_Typeof","_QTS_GetLength","_QTS_IsEqual","_QTS_GetGlobalObject","_QTS_NewPromiseCapability","_QTS_PromiseState","_QTS_PromiseResult","_QTS_TestStringArg","_QTS_GetDebugLogEnabled","_QTS_SetDebugLogEnabled","_QTS_BuildIsDebug","_QTS_BuildIsAsyncify","_QTS_NewFunction","_QTS_ArgvGetJSValueConstPointer","_QTS_RuntimeEnableInterruptHandler","_QTS_RuntimeDisableInterruptHandler","_QTS_RuntimeEnableModuleLoader","_QTS_RuntimeDisableModuleLoader","_QTS_bjson_encode","_QTS_bjson_decode","_malloc","_free","_qts_host_call_function","_qts_host_interrupt_handler","_qts_host_load_module_source","_qts_host_normalize_module","___indirect_function_table","onRuntimeInitialized"].forEach((prop) => {
  if (!Object.getOwnPropertyDescriptor(readyPromise, prop)) {
    Object.defineProperty(readyPromise, prop, {
      get: () => abort('You are getting ' + prop + ' on the Promise object, instead of the instance. Use .then() to get called back with the instance, see the MODULARIZE docs in src/settings.js'),
      set: () => abort('You are setting ' + prop + ' on the Promise object, instead of the instance. Use .then() to get called back with the instance, see the MODULARIZE docs in src/settings.js'),
    });
  }
});

// Determine the runtime environment we are in. You can customize this by
// setting the ENVIRONMENT setting at compile time (see settings.js).

// Attempt to auto-detect the environment
var ENVIRONMENT_IS_WEB = typeof window == 'object';
var ENVIRONMENT_IS_WORKER = typeof importScripts == 'function';
// N.b. Electron.js environment is simultaneously a NODE-environment, but
// also a web environment.
var ENVIRONMENT_IS_NODE = typeof process == 'object' && typeof process.versions == 'object' && typeof process.versions.node == 'string';
var ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;

if (Module['ENVIRONMENT']) {
  throw new Error('Module.ENVIRONMENT has been deprecated. To force the environment, use the ENVIRONMENT compile-time option (for example, -sENVIRONMENT=web or -sENVIRONMENT=node)');
}

// --pre-jses are emitted after the Module integration code, so that they can
// refer to Module (if they choose; they can also define Module)
// include: /Users/jitl/src/quickjs-emscripten/templates/pre-extension.js
/* eslint-disable no-undef */
// quickjs-emscripten code injected into emscripten-module.js
// We use this to expose and patch up issues with Emscripten's source map handling...
function quickjsEmscriptenInit(debugLog) {
  const log = debugLog || function () {}
  // Everything goes in a function so we can defer running until other variables
  // are initialized in case they change.
  const extension = { log }
  for (const init of quickjsEmscriptenInit.inits) {
    init(extension)
  }
  Module["quickJSEmscriptenExtensions"] = extension
  return extension
}
quickjsEmscriptenInit.inits = []
Module["quickjsEmscriptenInit"] = quickjsEmscriptenInit
// end include: /Users/jitl/src/quickjs-emscripten/templates/pre-extension.js
// include: /Users/jitl/src/quickjs-emscripten/templates/pre-sourceMapJson.js
/* eslint-disable no-undef */
quickjsEmscriptenInit.inits.push((extension) => {
  if (typeof receiveSourceMapJSON !== "undefined") {
    extension["receiveSourceMapJSON"] = (data) => {
      if (typeof wasmSourceMap === "undefined") {
        extension.log("receiveSourceMapJSON: received", data)
        return receiveSourceMapJSON(data)
      } else {
        extension.log("receiveSourceMapJSON: already have data:", wasmSourceMap, "ignoring", data)
      }
    }
  }
})
// end include: /Users/jitl/src/quickjs-emscripten/templates/pre-sourceMapJson.js
// include: /Users/jitl/src/quickjs-emscripten/templates/pre-wasmOffsetConverter.js
/* eslint-disable no-undef */
quickjsEmscriptenInit.inits.push((extension) => {
  if (typeof WasmOffsetConverter !== "undefined") {
    extension["WasmOffsetConverter"] = WasmOffsetConverter
    // Expose function to receive WasmOffsetConverter, set to wasmOffsetConverter local variable
    // if it exists
    try {
      // Check if wasmOffsetConverter variable exists. If it isn't defined, this
      // will throw and we'll skip the rest of the branch.
      extension["existingWasmOffsetConverter"] = wasmOffsetConverter
      extension["receiveWasmOffsetConverter"] = function (wasmBinary, wasmModule) {
        if (!wasmOffsetConverter) {
          extension.log("wasmOffsetConverter set")
          wasmOffsetConverter = new WasmOffsetConverter(wasmBinary, wasmModule)
        } else {
          extension.log("wasmOffsetConverter already set, ignored")
        }
      }
    } catch (error) {
      // Nothing.
      extension["receiveWasmOffsetConverter"] = function () {
        extension.log("wasmOffsetConverter variable not defined, this is a no-op")
      }
    }
  }
})
// end include: /Users/jitl/src/quickjs-emscripten/templates/pre-wasmOffsetConverter.js
// include: /Users/jitl/src/quickjs-emscripten/templates/pre-wasmMemory.js
/* eslint-disable no-undef */
quickjsEmscriptenInit.inits.push((extension) => {
  extension["getWasmMemory"] = function () {
    return wasmMemory
  }
})
// end include: /Users/jitl/src/quickjs-emscripten/templates/pre-wasmMemory.js


// Sometimes an existing Module object exists with properties
// meant to overwrite the default module functionality. Here
// we collect those properties and reapply _after_ we configure
// the current environment's defaults to avoid having to be so
// defensive during initialization.
var moduleOverrides = Object.assign({}, Module);

var arguments_ = [];
var thisProgram = './this.program';
var quit_ = (status, toThrow) => {
  throw toThrow;
};

// `/` should be present at the end if `scriptDirectory` is not empty
var scriptDirectory = '';
function locateFile(path) {
  if (Module['locateFile']) {
    return Module['locateFile'](path, scriptDirectory);
  }
  return scriptDirectory + path;
}

// Hooks that are implemented differently in different runtime environments.
var readAsync, readBinary;

if (ENVIRONMENT_IS_SHELL) {

  if ((typeof process == 'object' && typeof require === 'function') || typeof window == 'object' || typeof importScripts == 'function') throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

} else

// Note that this includes Node.js workers when relevant (pthreads is enabled).
// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
// ENVIRONMENT_IS_NODE.
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
  if (ENVIRONMENT_IS_WORKER) { // Check worker, not web, since window could be polyfilled
    scriptDirectory = self.location.href;
  } else if (typeof document != 'undefined' && document.currentScript) { // web
    scriptDirectory = document.currentScript.src;
  }
  // When MODULARIZE, this JS may be executed later, after document.currentScript
  // is gone, so we saved it, and we use it here instead of any other info.
  if (_scriptName) {
    scriptDirectory = _scriptName;
  }
  // blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
  // otherwise, slice off the final part of the url to find the script directory.
  // if scriptDirectory does not contain a slash, lastIndexOf will return -1,
  // and scriptDirectory will correctly be replaced with an empty string.
  // If scriptDirectory contains a query (starting with ?) or a fragment (starting with #),
  // they are removed because they could contain a slash.
  if (scriptDirectory.startsWith('blob:')) {
    scriptDirectory = '';
  } else {
    scriptDirectory = scriptDirectory.substr(0, scriptDirectory.replace(/[?#].*/, '').lastIndexOf('/')+1);
  }

  if (!(typeof window == 'object' || typeof importScripts == 'function')) throw new Error('not compiled for this environment (did you build to HTML and try to run it not on the web, or set ENVIRONMENT to something - like node - and run it someplace else - like on the web?)');

  {
// include: web_or_worker_shell_read.js
if (ENVIRONMENT_IS_WORKER) {
    readBinary = (url) => {
      var xhr = new XMLHttpRequest();
      xhr.open('GET', url, false);
      xhr.responseType = 'arraybuffer';
      xhr.send(null);
      return new Uint8Array(/** @type{!ArrayBuffer} */(xhr.response));
    };
  }

  readAsync = (url) => {
    assert(!isFileURI(url), "readAsync does not work with file:// URLs");
    return fetch(url, { credentials: 'same-origin' })
      .then((response) => {
        if (response.ok) {
          return response.arrayBuffer();
        }
        return Promise.reject(new Error(response.status + ' : ' + response.url));
      })
  };
// end include: web_or_worker_shell_read.js
  }
} else
{
  throw new Error('environment detection error');
}

var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.error.bind(console);

// Merge back in the overrides
Object.assign(Module, moduleOverrides);
// Free the object hierarchy contained in the overrides, this lets the GC
// reclaim data used.
moduleOverrides = null;
checkIncomingModuleAPI();

// Emit code to handle expected values on the Module object. This applies Module.x
// to the proper local x. This has two benefits: first, we only emit it if it is
// expected to arrive, and second, by using a local everywhere else that can be
// minified.

if (Module['arguments']) arguments_ = Module['arguments'];legacyModuleProp('arguments', 'arguments_');

if (Module['thisProgram']) thisProgram = Module['thisProgram'];legacyModuleProp('thisProgram', 'thisProgram');

// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message
// Assertions on removed incoming Module JS APIs.
assert(typeof Module['memoryInitializerPrefixURL'] == 'undefined', 'Module.memoryInitializerPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['pthreadMainPrefixURL'] == 'undefined', 'Module.pthreadMainPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['cdInitializerPrefixURL'] == 'undefined', 'Module.cdInitializerPrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['filePackagePrefixURL'] == 'undefined', 'Module.filePackagePrefixURL option was removed, use Module.locateFile instead');
assert(typeof Module['read'] == 'undefined', 'Module.read option was removed');
assert(typeof Module['readAsync'] == 'undefined', 'Module.readAsync option was removed (modify readAsync in JS)');
assert(typeof Module['readBinary'] == 'undefined', 'Module.readBinary option was removed (modify readBinary in JS)');
assert(typeof Module['setWindowTitle'] == 'undefined', 'Module.setWindowTitle option was removed (modify emscripten_set_window_title in JS)');
assert(typeof Module['TOTAL_MEMORY'] == 'undefined', 'Module.TOTAL_MEMORY has been renamed Module.INITIAL_MEMORY');
legacyModuleProp('asm', 'wasmExports');
legacyModuleProp('readAsync', 'readAsync');
legacyModuleProp('readBinary', 'readBinary');
legacyModuleProp('setWindowTitle', 'setWindowTitle');
var IDBFS = 'IDBFS is no longer included by default; build with -lidbfs.js';
var PROXYFS = 'PROXYFS is no longer included by default; build with -lproxyfs.js';
var WORKERFS = 'WORKERFS is no longer included by default; build with -lworkerfs.js';
var FETCHFS = 'FETCHFS is no longer included by default; build with -lfetchfs.js';
var ICASEFS = 'ICASEFS is no longer included by default; build with -licasefs.js';
var JSFILEFS = 'JSFILEFS is no longer included by default; build with -ljsfilefs.js';
var OPFS = 'OPFS is no longer included by default; build with -lopfs.js';

var NODEFS = 'NODEFS is no longer included by default; build with -lnodefs.js';

assert(!ENVIRONMENT_IS_NODE, 'node environment detected but not enabled at build time.  Add `node` to `-sENVIRONMENT` to enable.');

assert(!ENVIRONMENT_IS_SHELL, 'shell environment detected but not enabled at build time.  Add `shell` to `-sENVIRONMENT` to enable.');

// end include: shell.js

// include: preamble.js
// === Preamble library stuff ===

// Documentation for the public APIs defined in this file must be updated in:
//    site/source/docs/api_reference/preamble.js.rst
// A prebuilt local version of the documentation is available at:
//    site/build/text/docs/api_reference/preamble.js.txt
// You can also build docs locally as HTML or other formats in site/
// An online HTML version (which may be of a different version of Emscripten)
//    is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html

var wasmBinary = Module['wasmBinary'];legacyModuleProp('wasmBinary', 'wasmBinary');

if (typeof WebAssembly != 'object') {
  err('no native wasm support detected');
}

// Wasm globals

var wasmMemory;

//========================================
// Runtime essentials
//========================================

// whether we are quitting the application. no code should run after this.
// set in exit() and abort()
var ABORT = false;

// set by exit() and abort().  Passed to 'onExit' handler.
// NOTE: This is also used as the process return code code in shell environments
// but only when noExitRuntime is false.
var EXITSTATUS;

// In STRICT mode, we only define assert() when ASSERTIONS is set.  i.e. we
// don't define it at all in release modes.  This matches the behaviour of
// MINIMAL_RUNTIME.
// TODO(sbc): Make this the default even without STRICT enabled.
/** @type {function(*, string=)} */
function assert(condition, text) {
  if (!condition) {
    abort('Assertion failed' + (text ? ': ' + text : ''));
  }
}

// We used to include malloc/free by default in the past. Show a helpful error in
// builds with assertions.

// Memory management

var HEAP,
/** @type {!Int8Array} */
  HEAP8,
/** @type {!Uint8Array} */
  HEAPU8,
/** @type {!Int16Array} */
  HEAP16,
/** @type {!Uint16Array} */
  HEAPU16,
/** @type {!Int32Array} */
  HEAP32,
/** @type {!Uint32Array} */
  HEAPU32,
/** @type {!Float32Array} */
  HEAPF32,
/** @type {!Float64Array} */
  HEAPF64;

// include: runtime_shared.js
function updateMemoryViews() {
  var b = wasmMemory.buffer;
  Module['HEAP8'] = HEAP8 = new Int8Array(b);
  Module['HEAP16'] = HEAP16 = new Int16Array(b);
  Module['HEAPU8'] = HEAPU8 = new Uint8Array(b);
  Module['HEAPU16'] = HEAPU16 = new Uint16Array(b);
  Module['HEAP32'] = HEAP32 = new Int32Array(b);
  Module['HEAPU32'] = HEAPU32 = new Uint32Array(b);
  Module['HEAPF32'] = HEAPF32 = new Float32Array(b);
  Module['HEAPF64'] = HEAPF64 = new Float64Array(b);
}
// end include: runtime_shared.js
assert(!Module['STACK_SIZE'], 'STACK_SIZE can no longer be set at runtime.  Use -sSTACK_SIZE at link time')

assert(typeof Int32Array != 'undefined' && typeof Float64Array !== 'undefined' && Int32Array.prototype.subarray != undefined && Int32Array.prototype.set != undefined,
       'JS engine does not provide full typed array support');

// In non-standalone/normal mode, we create the memory here.
// include: runtime_init_memory.js
// Create the wasm memory. (Note: this only applies if IMPORTED_MEMORY is defined)

// check for full engine support (use string 'subarray' to avoid closure compiler confusion)

  if (Module['wasmMemory']) {
    wasmMemory = Module['wasmMemory'];
  } else
  {
    var INITIAL_MEMORY = Module['INITIAL_MEMORY'] || 16777216;legacyModuleProp('INITIAL_MEMORY', 'INITIAL_MEMORY');

    assert(INITIAL_MEMORY >= 5242880, 'INITIAL_MEMORY should be larger than STACK_SIZE, was ' + INITIAL_MEMORY + '! (STACK_SIZE=' + 5242880 + ')');
    wasmMemory = new WebAssembly.Memory({
      'initial': INITIAL_MEMORY / 65536,
      // In theory we should not need to emit the maximum if we want "unlimited"
      // or 4GB of memory, but VMs error on that atm, see
      // https://github.com/emscripten-core/emscripten/issues/14130
      // And in the pthreads case we definitely need to emit a maximum. So
      // always emit one.
      'maximum': 2147483648 / 65536,
    });
  }

  updateMemoryViews();

// end include: runtime_init_memory.js

// include: runtime_stack_check.js
// Initializes the stack cookie. Called at the startup of main and at the startup of each thread in pthreads mode.
function writeStackCookie() {
  var max = _emscripten_stack_get_end();
  assert((max & 3) == 0);
  // If the stack ends at address zero we write our cookies 4 bytes into the
  // stack.  This prevents interference with SAFE_HEAP and ASAN which also
  // monitor writes to address zero.
  if (max == 0) {
    max += 4;
  }
  // The stack grow downwards towards _emscripten_stack_get_end.
  // We write cookies to the final two words in the stack and detect if they are
  // ever overwritten.
  HEAPU32[((max)>>2)] = 0x02135467;
  HEAPU32[(((max)+(4))>>2)] = 0x89BACDFE;
  // Also test the global address 0 for integrity.
  HEAPU32[((0)>>2)] = 1668509029;
}

function checkStackCookie() {
  if (ABORT) return;
  var max = _emscripten_stack_get_end();
  // See writeStackCookie().
  if (max == 0) {
    max += 4;
  }
  var cookie1 = HEAPU32[((max)>>2)];
  var cookie2 = HEAPU32[(((max)+(4))>>2)];
  if (cookie1 != 0x02135467 || cookie2 != 0x89BACDFE) {
    abort(`Stack overflow! Stack cookie has been overwritten at ${ptrToString(max)}, expected hex dwords 0x89BACDFE and 0x2135467, but received ${ptrToString(cookie2)} ${ptrToString(cookie1)}`);
  }
  // Also test the global address 0 for integrity.
  if (HEAPU32[((0)>>2)] != 0x63736d65 /* 'emsc' */) {
    abort('Runtime error: The application has corrupted its heap memory area (address zero)!');
  }
}
// end include: runtime_stack_check.js
var __ATPRERUN__  = []; // functions called before the runtime is initialized
var __ATINIT__    = []; // functions called during startup
var __ATEXIT__    = []; // functions called during shutdown
var __ATPOSTRUN__ = []; // functions called after the main() is called

var runtimeInitialized = false;

var runtimeExited = false;

function preRun() {
  if (Module['preRun']) {
    if (typeof Module['preRun'] == 'function') Module['preRun'] = [Module['preRun']];
    while (Module['preRun'].length) {
      addOnPreRun(Module['preRun'].shift());
    }
  }
  callRuntimeCallbacks(__ATPRERUN__);
}

function initRuntime() {
  assert(!runtimeInitialized);
  runtimeInitialized = true;

  checkStackCookie();

  
if (!Module['noFSInit'] && !FS.initialized)
  FS.init();
FS.ignorePermissions = false;

TTY.init();
  callRuntimeCallbacks(__ATINIT__);
}

function exitRuntime() {
  assert(!runtimeExited);
  checkStackCookie();
  ___funcs_on_exit(); // Native atexit() functions
  callRuntimeCallbacks(__ATEXIT__);
  FS.quit();
TTY.shutdown();
  runtimeExited = true;
}

function postRun() {
  checkStackCookie();

  if (Module['postRun']) {
    if (typeof Module['postRun'] == 'function') Module['postRun'] = [Module['postRun']];
    while (Module['postRun'].length) {
      addOnPostRun(Module['postRun'].shift());
    }
  }

  callRuntimeCallbacks(__ATPOSTRUN__);
}

function addOnPreRun(cb) {
  __ATPRERUN__.unshift(cb);
}

function addOnInit(cb) {
  __ATINIT__.unshift(cb);
}

function addOnExit(cb) {
  __ATEXIT__.unshift(cb);
}

function addOnPostRun(cb) {
  __ATPOSTRUN__.unshift(cb);
}

// include: runtime_math.js
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc

assert(Math.imul, 'This browser does not support Math.imul(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
assert(Math.fround, 'This browser does not support Math.fround(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
assert(Math.clz32, 'This browser does not support Math.clz32(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
assert(Math.trunc, 'This browser does not support Math.trunc(), build with LEGACY_VM_SUPPORT or POLYFILL_OLD_MATH_FUNCTIONS to add in a polyfill');
// end include: runtime_math.js
// A counter of dependencies for calling run(). If we need to
// do asynchronous work before running, increment this and
// decrement it. Incrementing must happen in a place like
// Module.preRun (used by emcc to add file preloading).
// Note that you can add dependencies in preRun, even though
// it happens right before run - run will be postponed until
// the dependencies are met.
var runDependencies = 0;
var runDependencyWatcher = null;
var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled
var runDependencyTracking = {};

function getUniqueRunDependency(id) {
  var orig = id;
  while (1) {
    if (!runDependencyTracking[id]) return id;
    id = orig + Math.random();
  }
}

function addRunDependency(id) {
  runDependencies++;

  Module['monitorRunDependencies']?.(runDependencies);

  if (id) {
    assert(!runDependencyTracking[id]);
    runDependencyTracking[id] = 1;
    if (runDependencyWatcher === null && typeof setInterval != 'undefined') {
      // Check for missing dependencies every few seconds
      runDependencyWatcher = setInterval(() => {
        if (ABORT) {
          clearInterval(runDependencyWatcher);
          runDependencyWatcher = null;
          return;
        }
        var shown = false;
        for (var dep in runDependencyTracking) {
          if (!shown) {
            shown = true;
            err('still waiting on run dependencies:');
          }
          err(`dependency: ${dep}`);
        }
        if (shown) {
          err('(end of list)');
        }
      }, 10000);
    }
  } else {
    err('warning: run dependency added without ID');
  }
}

function removeRunDependency(id) {
  runDependencies--;

  Module['monitorRunDependencies']?.(runDependencies);

  if (id) {
    assert(runDependencyTracking[id]);
    delete runDependencyTracking[id];
  } else {
    err('warning: run dependency removed without ID');
  }
  if (runDependencies == 0) {
    if (runDependencyWatcher !== null) {
      clearInterval(runDependencyWatcher);
      runDependencyWatcher = null;
    }
    if (dependenciesFulfilled) {
      var callback = dependenciesFulfilled;
      dependenciesFulfilled = null;
      callback(); // can add another dependenciesFulfilled
    }
  }
}

/** @param {string|number=} what */
function abort(what) {
  Module['onAbort']?.(what);

  what = 'Aborted(' + what + ')';
  // TODO(sbc): Should we remove printing and leave it up to whoever
  // catches the exception?
  err(what);

  ABORT = true;
  EXITSTATUS = 1;

  // Use a wasm runtime error, because a JS error might be seen as a foreign
  // exception, which means we'd run destructors on it. We need the error to
  // simply make the program stop.
  // FIXME This approach does not work in Wasm EH because it currently does not assume
  // all RuntimeErrors are from traps; it decides whether a RuntimeError is from
  // a trap or not based on a hidden field within the object. So at the moment
  // we don't have a way of throwing a wasm trap from JS. TODO Make a JS API that
  // allows this in the wasm spec.

  // Suppress closure compiler warning here. Closure compiler's builtin extern
  // definition for WebAssembly.RuntimeError claims it takes no arguments even
  // though it can.
  // TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure gets fixed.
  /** @suppress {checkTypes} */
  var e = new WebAssembly.RuntimeError(what);

  readyPromiseReject(e);
  // Throw the error whether or not MODULARIZE is set because abort is used
  // in code paths apart from instantiation where an exception is expected
  // to be thrown when abort is called.
  throw e;
}

// include: memoryprofiler.js
// end include: memoryprofiler.js
// include: URIUtils.js
// Prefix of data URIs emitted by SINGLE_FILE and related options.
var dataURIPrefix = 'data:application/octet-stream;base64,';

/**
 * Indicates whether filename is a base64 data URI.
 * @noinline
 */
var isDataURI = (filename) => filename.startsWith(dataURIPrefix);

/**
 * Indicates whether filename is delivered via file protocol (as opposed to http/https)
 * @noinline
 */
var isFileURI = (filename) => filename.startsWith('file://');
// end include: URIUtils.js
function createExportWrapper(name, nargs) {
  return (...args) => {
    assert(runtimeInitialized, `native function \`${name}\` called before runtime initialization`);
    assert(!runtimeExited, `native function \`${name}\` called after runtime exit (use NO_EXIT_RUNTIME to keep it alive after main() exits)`);
    var f = wasmExports[name];
    assert(f, `exported native function \`${name}\` not found`);
    // Only assert for too many arguments. Too few can be valid since the missing arguments will be zero filled.
    assert(args.length <= nargs, `native function \`${name}\` called with ${args.length} args but expects ${nargs}`);
    return f(...args);
  };
}

// include: runtime_exceptions.js
// end include: runtime_exceptions.js
function findWasmBinary() {
  if (Module['locateFile']) {
    var f = 'emscripten-module.wasm';
    if (!isDataURI(f)) {
      return locateFile(f);
    }
    return f;
  }
  // Use bundler-friendly `new URL(..., import.meta.url)` pattern; works in browsers too.
  return new URL('emscripten-module.wasm', import.meta.url).href;
}

var wasmBinaryFile;

function getBinarySync(file) {
  if (file == wasmBinaryFile && wasmBinary) {
    return new Uint8Array(wasmBinary);
  }
  if (readBinary) {
    return readBinary(file);
  }
  throw 'both async and sync fetching of the wasm failed';
}

function getBinaryPromise(binaryFile) {
  // If we don't have the binary yet, load it asynchronously using readAsync.
  if (!wasmBinary
      ) {
    // Fetch the binary using readAsync
    return readAsync(binaryFile).then(
      (response) => new Uint8Array(/** @type{!ArrayBuffer} */(response)),
      // Fall back to getBinarySync if readAsync fails
      () => getBinarySync(binaryFile)
    );
  }

  // Otherwise, getBinarySync should be able to get it synchronously
  return Promise.resolve().then(() => getBinarySync(binaryFile));
}

var wasmSourceMap;
// include: source_map_support.js
/**
 * @constructor
 */
function WasmSourceMap(sourceMap) {
  this.version = sourceMap.version;
  this.sources = sourceMap.sources;
  this.names = sourceMap.names;

  this.mapping = {};
  this.offsets = [];

  var vlqMap = {};
  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='.split('').forEach((c, i) => vlqMap[c] = i);

  // based on https://github.com/Rich-Harris/vlq/blob/master/src/vlq.ts
  function decodeVLQ(string) {
    var result = [];
    var shift = 0;
    var value = 0;

    for (var i = 0; i < string.length; ++i) {
      var integer = vlqMap[string[i]];
      if (integer === undefined) {
        throw new Error('Invalid character (' + string[i] + ')');
      }

      value += (integer & 31) << shift;

      if (integer & 32) {
        shift += 5;
      } else {
        var negate = value & 1;
        value >>= 1;
        result.push(negate ? -value : value);
        value = shift = 0;
      }
    }
    return result;
  }

  var offset = 0, src = 0, line = 1, col = 1, name = 0;
  sourceMap.mappings.split(',').forEach(function (segment, index) {
    if (!segment) return;
    var data = decodeVLQ(segment);
    var info = {};

    offset += data[0];
    if (data.length >= 2) info.source = src += data[1];
    if (data.length >= 3) info.line = line += data[2];
    if (data.length >= 4) info.column = col += data[3];
    if (data.length >= 5) info.name = name += data[4];
    this.mapping[offset] = info;
    this.offsets.push(offset);
  }, this);
  this.offsets.sort((a, b) => a - b);
}

WasmSourceMap.prototype.lookup = function (offset) {
  var normalized = this.normalizeOffset(offset);
  if (!wasmOffsetConverter.isSameFunc(offset, normalized)) {
    return null;
  }
  var info = this.mapping[normalized];
  if (!info) {
    return null;
  }
  return {
    file: this.sources[info.source],
    line: info.line,
    column: info.column,
    name: this.names[info.name],
  };
}

WasmSourceMap.prototype.normalizeOffset = function (offset) {
  var lo = 0;
  var hi = this.offsets.length;
  var mid;

  while (lo < hi) {
    mid = Math.floor((lo + hi) / 2);
    if (this.offsets[mid] > offset) {
      hi = mid;
    } else {
      lo = mid + 1;
    }
  }
  return this.offsets[lo - 1];
}

var wasmSourceMapFile = 'emscripten-module.wasm.map';
if (!isDataURI(wasmSourceMapFile)) {
  wasmSourceMapFile = locateFile(wasmSourceMapFile);
}

function getSourceMap() {
  var buf = readBinary(wasmSourceMapFile);
  return JSON.parse(UTF8ArrayToString(buf, 0, buf.length));
}

function getSourceMapPromise() {
  if ((ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) && typeof fetch == 'function') {
    return fetch(wasmSourceMapFile, { credentials: 'same-origin' })
      .then((response) => response.json())
      .catch(getSourceMap);
  }
  return Promise.resolve(getSourceMap());
}
// end include: source_map_support.js

var wasmOffsetConverter;
// include: wasm_offset_converter.js
/** @constructor */
function WasmOffsetConverter(wasmBytes, wasmModule) {
  // This class parses a WASM binary file, and constructs a mapping from
  // function indices to the start of their code in the binary file, as well
  // as parsing the name section to allow conversion of offsets to function names.
  //
  // The main purpose of this module is to enable the conversion of function
  // index and offset from start of function to an offset into the WASM binary.
  // This is needed to look up the WASM source map as well as generate
  // consistent program counter representations given v8's non-standard
  // WASM stack trace format.
  //
  // v8 bug: https://crbug.com/v8/9172
  //
  // This code is also used to check if the candidate source map offset is
  // actually part of the same function as the offset we are looking for,
  // as well as providing the function names for a given offset.

  // current byte offset into the WASM binary, as we parse it
  // the first section starts at offset 8.
  var offset = 8;

  // the index of the next function we see in the binary
  var funcidx = 0;

  // map from function index to byte offset in WASM binary
  this.offset_map = {};
  this.func_starts = [];

  // map from function index to names in WASM binary
  this.name_map = {};

  // number of imported functions this module has
  this.import_functions = 0;

  // the buffer unsignedLEB128 will read from.
  var buffer = wasmBytes;

  function unsignedLEB128() {
    // consumes an unsigned LEB128 integer starting at `offset`.
    // changes `offset` to immediately after the integer
    var result = 0;
    var shift = 0;
    do {
      var byte = buffer[offset++];
      result += (byte & 0x7F) << shift;
      shift += 7;
    } while (byte & 0x80);
    return result;
  }

  function skipLimits() {
    var flags = unsignedLEB128();
    unsignedLEB128(); // initial size
    var hasMax = (flags & 1) != 0;
    if (hasMax) {
      unsignedLEB128();
    }
  }

  binary_parse:
  while (offset < buffer.length) {
    var start = offset;
    var type = buffer[offset++];
    var end = unsignedLEB128() + offset;
    switch (type) {
      case 2: // import section
        // we need to find all function imports and increment funcidx for each one
        // since functions defined in the module are numbered after all imports
        var count = unsignedLEB128();

        while (count-- > 0) {
          // skip module
          offset = unsignedLEB128() + offset;
          // skip name
          offset = unsignedLEB128() + offset;

          var kind = buffer[offset++];
          switch (kind) {
            case 0: // function import
              ++funcidx;
              unsignedLEB128(); // skip function type
              break;
            case 1: // table import
              unsignedLEB128(); // skip elem type
              skipLimits();
              break;
            case 2: // memory import
              skipLimits();
              break;
            case 3: // global import
              offset += 2; // skip type id byte and mutability byte
              break;
            case 4: // tag import
              ++offset; // skip attribute
              unsignedLEB128(); // skip tag type
              break;
            default: throw 'bad import kind: ' + kind;
          }
        }
        this.import_functions = funcidx;
        break;
      case 10: // code section
        var count = unsignedLEB128();
        while (count-- > 0) {
          var size = unsignedLEB128();
          this.offset_map[funcidx++] = offset;
          this.func_starts.push(offset);
          offset += size;
        }
        break binary_parse;
    }
    offset = end;
  }

  var sections = WebAssembly.Module.customSections(wasmModule, "name");
  var nameSection = sections.length ? sections[0] : undefined;
  if (nameSection) {
    buffer = new Uint8Array(nameSection);
    offset = 0;
    while (offset < buffer.length) {
      var subsection_type = buffer[offset++];
      var len = unsignedLEB128(); // byte count
      if (subsection_type != 1) {
        // Skip the whole sub-section if it's not a function name sub-section.
        offset += len;
        continue;
      }
      var count = unsignedLEB128();
      while (count-- > 0) {
        var index = unsignedLEB128();
        var length = unsignedLEB128();
        this.name_map[index] = UTF8ArrayToString(buffer, offset, length);
        offset += length;
      }
    }
  }
}

WasmOffsetConverter.prototype.convert = function (funcidx, offset) {
  return this.offset_map[funcidx] + offset;
}

WasmOffsetConverter.prototype.getIndex = function (offset) {
  var lo = 0;
  var hi = this.func_starts.length;
  var mid;

  while (lo < hi) {
    mid = Math.floor((lo + hi) / 2);
    if (this.func_starts[mid] > offset) {
      hi = mid;
    } else {
      lo = mid + 1;
    }
  }
  return lo + this.import_functions - 1;
}

WasmOffsetConverter.prototype.isSameFunc = function (offset1, offset2) {
  return this.getIndex(offset1) == this.getIndex(offset2);
}

WasmOffsetConverter.prototype.getName = function (offset) {
  var index = this.getIndex(offset);
  return this.name_map[index] || ('wasm-function[' + index + ']');
}
// end include: wasm_offset_converter.js

function receiveSourceMapJSON(sourceMap) {
  wasmSourceMap = new WasmSourceMap(sourceMap);
  removeRunDependency('source-map');
}

function instantiateArrayBuffer(binaryFile, imports, receiver) {
  var savedBinary;
  return getBinaryPromise(binaryFile).then((binary) => {
    savedBinary = binary;
    return WebAssembly.instantiate(binary, imports);
  }).then((instance) => {
    // wasmOffsetConverter needs to be assigned before calling the receiver
    // (receiveInstantiationResult).  See comments below in instantiateAsync.
    wasmOffsetConverter = new WasmOffsetConverter(savedBinary, instance.module);
    return instance;
  }).then(receiver, (reason) => {
    err(`failed to asynchronously prepare wasm: ${reason}`);

    // Warn on some common problems.
    if (isFileURI(wasmBinaryFile)) {
      err(`warning: Loading from a file URI (${wasmBinaryFile}) is not supported in most browsers. See https://emscripten.org/docs/getting_started/FAQ.html#how-do-i-run-a-local-webserver-for-testing-why-does-my-program-stall-in-downloading-or-preparing`);
    }
    abort(reason);
  });
}

function instantiateAsync(binary, binaryFile, imports, callback) {
  if (!binary &&
      typeof WebAssembly.instantiateStreaming == 'function' &&
      !isDataURI(binaryFile) &&
      typeof fetch == 'function') {
    return fetch(binaryFile, { credentials: 'same-origin' }).then((response) => {
      // Suppress closure warning here since the upstream definition for
      // instantiateStreaming only allows Promise<Repsponse> rather than
      // an actual Response.
      // TODO(https://github.com/google/closure-compiler/pull/3913): Remove if/when upstream closure is fixed.
      /** @suppress {checkTypes} */
      var result = WebAssembly.instantiateStreaming(response, imports);

      // We need the wasm binary for the offset converter. Clone the response
      // in order to get its arrayBuffer (cloning should be more efficient
      // than doing another entire request).
      // (We must clone the response now in order to use it later, as if we
      // try to clone it asynchronously lower down then we will get a
      // "response was already consumed" error.)
      var clonedResponsePromise = response.clone().arrayBuffer();

      return result.then(
        function(instantiationResult) {
          // When using the offset converter, we must interpose here. First,
          // the instantiation result must arrive (if it fails, the error
          // handling later down will handle it). Once it arrives, we can
          // initialize the offset converter. And only then is it valid to
          // call receiveInstantiationResult, as that function will use the
          // offset converter (in the case of pthreads, it will create the
          // pthreads and send them the offsets along with the wasm instance).

          clonedResponsePromise.then((arrayBufferResult) => {
              wasmOffsetConverter = new WasmOffsetConverter(new Uint8Array(arrayBufferResult), instantiationResult.module);
              callback(instantiationResult);
            },
            (reason) => err(`failed to initialize offset-converter: ${reason}`)
          );
        },
        function(reason) {
          // We expect the most common failure cause to be a bad MIME type for the binary,
          // in which case falling back to ArrayBuffer instantiation should work.
          err(`wasm streaming compile failed: ${reason}`);
          err('falling back to ArrayBuffer instantiation');
          return instantiateArrayBuffer(binaryFile, imports, callback);
        });
    });
  }
  return instantiateArrayBuffer(binaryFile, imports, callback);
}

function getWasmImports() {
  // prepare imports
  return {
    'env': wasmImports,
    'wasi_snapshot_preview1': wasmImports,
  }
}

// Create the wasm instance.
// Receives the wasm imports, returns the exports.
function createWasm() {
  var info = getWasmImports();
  // Load the wasm module and create an instance of using native support in the JS engine.
  // handle a generated wasm instance, receiving its exports and
  // performing other necessary setup
  /** @param {WebAssembly.Module=} module*/
  function receiveInstance(instance, module) {
    wasmExports = instance.exports;

    

    addOnInit(wasmExports['__wasm_call_ctors']);

    removeRunDependency('wasm-instantiate');
    return wasmExports;
  }
  // wait for the pthread pool (if any)
  addRunDependency('wasm-instantiate');

  addRunDependency('source-map');

  // Prefer streaming instantiation if available.
  // Async compilation can be confusing when an error on the page overwrites Module
  // (for example, if the order of elements is wrong, and the one defining Module is
  // later), so we save Module and check it later.
  var trueModule = Module;
  function receiveInstantiationResult(result) {
    // 'result' is a ResultObject object which has both the module and instance.
    // receiveInstance() will swap in the exports (to Module.asm) so they can be called
    assert(Module === trueModule, 'the Module object should not be replaced during async compilation - perhaps the order of HTML elements is wrong?');
    trueModule = null;
    // TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
    // When the regression is fixed, can restore the above PTHREADS-enabled path.
    receiveInstance(result['instance']);
  }

  // User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
  // to manually instantiate the Wasm module themselves. This allows pages to
  // run the instantiation parallel to any other async startup actions they are
  // performing.
  // Also pthreads and wasm workers initialize the wasm instance through this
  // path.
  if (Module['instantiateWasm']) {
    try {
      return Module['instantiateWasm'](info, receiveInstance);
    } catch(e) {
      err(`Module.instantiateWasm callback failed with error: ${e}`);
        // If instantiation fails, reject the module ready promise.
        readyPromiseReject(e);
    }
  }

  if (!wasmBinaryFile) wasmBinaryFile = findWasmBinary();

  // If instantiation fails, reject the module ready promise.
  instantiateAsync(wasmBinary, wasmBinaryFile, info, receiveInstantiationResult).catch(readyPromiseReject);
  getSourceMapPromise().then(receiveSourceMapJSON);
  return {}; // no exports yet; we'll fill them in later
}

// Globals used by JS i64 conversions (see makeSetValue)
var tempDouble;
var tempI64;

// include: runtime_debug.js
// Endianness check
(function() {
  var h16 = new Int16Array(1);
  var h8 = new Int8Array(h16.buffer);
  h16[0] = 0x6373;
  if (h8[0] !== 0x73 || h8[1] !== 0x63) throw 'Runtime error: expected the system to be little-endian! (Run with -sSUPPORT_BIG_ENDIAN to bypass)';
})();

function legacyModuleProp(prop, newName, incoming=true) {
  if (!Object.getOwnPropertyDescriptor(Module, prop)) {
    Object.defineProperty(Module, prop, {
      configurable: true,
      get() {
        let extra = incoming ? ' (the initial value can be provided on Module, but after startup the value is only looked for on a local variable of that name)' : '';
        abort(`\`Module.${prop}\` has been replaced by \`${newName}\`` + extra);

      }
    });
  }
}

function ignoredModuleProp(prop) {
  if (Object.getOwnPropertyDescriptor(Module, prop)) {
    abort(`\`Module.${prop}\` was supplied but \`${prop}\` not included in INCOMING_MODULE_JS_API`);
  }
}

// forcing the filesystem exports a few things by default
function isExportedByForceFilesystem(name) {
  return name === 'FS_createPath' ||
         name === 'FS_createDataFile' ||
         name === 'FS_createPreloadedFile' ||
         name === 'FS_unlink' ||
         name === 'addRunDependency' ||
         // The old FS has some functionality that WasmFS lacks.
         name === 'FS_createLazyFile' ||
         name === 'FS_createDevice' ||
         name === 'removeRunDependency';
}

function missingGlobal(sym, msg) {
  if (typeof globalThis != 'undefined') {
    Object.defineProperty(globalThis, sym, {
      configurable: true,
      get() {
        warnOnce(`\`${sym}\` is not longer defined by emscripten. ${msg}`);
        return undefined;
      }
    });
  }
}

missingGlobal('buffer', 'Please use HEAP8.buffer or wasmMemory.buffer');
missingGlobal('asm', 'Please use wasmExports instead');

function missingLibrarySymbol(sym) {
  if (typeof globalThis != 'undefined' && !Object.getOwnPropertyDescriptor(globalThis, sym)) {
    Object.defineProperty(globalThis, sym, {
      configurable: true,
      get() {
        // Can't `abort()` here because it would break code that does runtime
        // checks.  e.g. `if (typeof SDL === 'undefined')`.
        var msg = `\`${sym}\` is a library symbol and not included by default; add it to your library.js __deps or to DEFAULT_LIBRARY_FUNCS_TO_INCLUDE on the command line`;
        // DEFAULT_LIBRARY_FUNCS_TO_INCLUDE requires the name as it appears in
        // library.js, which means $name for a JS name with no prefix, or name
        // for a JS name like _name.
        var librarySymbol = sym;
        if (!librarySymbol.startsWith('_')) {
          librarySymbol = '$' + sym;
        }
        msg += ` (e.g. -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE='${librarySymbol}')`;
        if (isExportedByForceFilesystem(sym)) {
          msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
        }
        warnOnce(msg);
        return undefined;
      }
    });
  }
  // Any symbol that is not included from the JS library is also (by definition)
  // not exported on the Module object.
  unexportedRuntimeSymbol(sym);
}

function unexportedRuntimeSymbol(sym) {
  if (!Object.getOwnPropertyDescriptor(Module, sym)) {
    Object.defineProperty(Module, sym, {
      configurable: true,
      get() {
        var msg = `'${sym}' was not exported. add it to EXPORTED_RUNTIME_METHODS (see the Emscripten FAQ)`;
        if (isExportedByForceFilesystem(sym)) {
          msg += '. Alternatively, forcing filesystem support (-sFORCE_FILESYSTEM) can export this for you';
        }
        abort(msg);
      }
    });
  }
}

// Used by XXXXX_DEBUG settings to output debug messages.
function dbg(...args) {
  // TODO(sbc): Make this configurable somehow.  Its not always convenient for
  // logging to show up as warnings.
  console.warn(...args);
}
// end include: runtime_debug.js
// === Body ===

function qts_host_call_function(ctx,this_ptr,argc,argv,magic_func_id) { const asyncify = undefined; return Module['callbacks']['callFunction'](asyncify, ctx, this_ptr, argc, argv, magic_func_id); }
function qts_host_interrupt_handler(rt) { const asyncify = undefined; return Module['callbacks']['shouldInterrupt'](asyncify, rt); }
function qts_host_load_module_source(rt,ctx,module_name) { const asyncify = undefined; const moduleNameString = UTF8ToString(module_name); return Module['callbacks']['loadModuleSource'](asyncify, rt, ctx, moduleNameString); }
function qts_host_normalize_module(rt,ctx,module_base_name,module_name) { const asyncify = undefined; const moduleBaseNameString = UTF8ToString(module_base_name); const moduleNameString = UTF8ToString(module_name); return Module['callbacks']['normalizeModule'](asyncify, rt, ctx, moduleBaseNameString, moduleNameString); }

// end include: preamble.js


  /** @constructor */
  function ExitStatus(status) {
      this.name = 'ExitStatus';
      this.message = `Program terminated with exit(${status})`;
      this.status = status;
    }

  var UTF8Decoder = typeof TextDecoder != 'undefined' ? new TextDecoder() : undefined;
  
    /**
     * Given a pointer 'idx' to a null-terminated UTF8-encoded string in the given
     * array that contains uint8 values, returns a copy of that string as a
     * Javascript String object.
     * heapOrArray is either a regular array, or a JavaScript typed array view.
     * @param {number} idx
     * @param {number=} maxBytesToRead
     * @return {string}
     */
  var UTF8ArrayToString = (heapOrArray, idx, maxBytesToRead) => {
      var endIdx = idx + maxBytesToRead;
      var endPtr = idx;
      // TextDecoder needs to know the byte length in advance, it doesn't stop on
      // null terminator by itself.  Also, use the length info to avoid running tiny
      // strings through TextDecoder, since .subarray() allocates garbage.
      // (As a tiny code save trick, compare endPtr against endIdx using a negation,
      // so that undefined means Infinity)
      while (heapOrArray[endPtr] && !(endPtr >= endIdx)) ++endPtr;
  
      if (endPtr - idx > 16 && heapOrArray.buffer && UTF8Decoder) {
        return UTF8Decoder.decode(heapOrArray.subarray(idx, endPtr));
      }
      var str = '';
      // If building with TextDecoder, we have already computed the string length
      // above, so test loop end condition against that
      while (idx < endPtr) {
        // For UTF8 byte structure, see:
        // http://en.wikipedia.org/wiki/UTF-8#Description
        // https